Structure O-18-CM · Las Animas County, CO

I 25 Ml Sbnd over Berwind Canyon

Carries I 25 Ml Sbnd over Berwind Canyon, 8.4 Mi S Of Aguilar Road.

Overall conditionFair

Set by its lowest-rated component: Deck at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT116 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 7/9

116 ft end to end, longest span 78 ft. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a tee-beam bridge.

Built197650 years old
Length116.1 ft35.4 m
Daily traffic6,000counted 2020
Last inspectedOctober 2024every 24 months

Location

StateColorado
CountyLas Animas
Location8.4 Mi S Of Aguilar Road
CarriesI 25 Ml Sbnd
CrossesBerwind Canyon
Coordinates37.32408, -104.55862

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length116.1 ft (35.4 m)
Max Span78.1 ft (23.8 m)
Deck Width44.6 ft (13.6 m)
Deck Area481.4 sq m
Main Spans3
Year Built1976

Traffic

Avg Daily Traffic6,000 (2020)
Truck Traffic20%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberO-18-CM

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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